Technical Specs (please complete the following information):

• Craft to Exile Version [2.9.3b]
• World Type: Singleplayer
• RAM Allocation: 8GB

Describe the bug
Im playing a SP version of the pack with OreExcavation added up and for some unknow reason withers not dropping

Additional Information (screen shots, etc.)
down below screenshots of loots after wither kill

have you tried again in an open space maybe?